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Spatial structure composed of multiple rods connected by nodes in a certain grid form. It has the advantages of small space force, light weight, large stiffness and good seismic performance. It can be used as the roof of gymnasium, cinema, exhibition hall, waiting hall, awning of stadium stand, hangar, large column distance workshop and other buildings. <br>https://www.cnxzlf.com/
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Double-layer space frame form 1. Plane quilting system 1 Two-way orthogonal placement 2. Two-way orthogonal oblique placement 3. Two-way oblique intersecting oblique placement 4. Three-way space frame 2. Quadrangular pyramid system 1. Positive quadrangular pyramid system 2. Positive discharge quadrangular pyramid system 3. Unidirectional polyline space frame 4. Oblique quadrangular pyramid system 5. Checkerboard quadrangular pyramid space frame 6. Star quadrangular pyramid 3. Triangular cone system 1. Triangular cone space frame 2. Evacuate triangular cone space frame 3. Honeycomb triangular cone space frame
(1), two-way orthogonal positive-laying space frame The two-direction orthogonal right-laying is formed by the vertical crossing of two-direction plane trusses. When applied in a rectangular building plan, the two-way quilting is perpendicular to the boundary (parallel) The number of space frame in the two directions should be arranged in an even number. If it is an odd number, the internodes in the middle of the quilt should be made into cross webs. Because the space frame composed of the upper and lower chords of the space frame is rectangular, the webs are in the plane of the upper and lower chords, which is geometrically variable.
The force of the two-way orthogonal orthographic space frame is similar to the two-way equal-rigidity cross beam, which varies with the plane size and supporting conditions. For peripheral support, the closer the plane size is to the square, the closer the internal forces of the quilting rods in the two directions, and the more significant the spatial effect. But with the increase of the side length ratio, the one-way force transmission effect increases obviously. For the point-supported space frame, the internal force of the rod near the support and the rod of the main quilt is larger, and the internal force of the rods in other parts is small, and the difference between the two is large.
Two synchro diagonally placed space frame Three-way space frame
(5), forward quadrangular pyramid system Basic unit of quadrangular pyramid system Square pyramid space frame
(6), the quadrangular pyramid space frame is being discharged and evacuated
(9). Checkerboard-shaped quadrangular pyramid space frame The checkerboard-shaped quadrangular pyramid space frame is named because its shape is similar to that of a chess board. On the basis of the quadrangular pyramid, except for the surrounding quadrangular pyramid, the middle quadrangular pyramid is emptied, the lower chord is placed orthogonally, the upper chord is orthogonally placed, and the lower chord is at an angle of 45 degrees with the boundary, and the upper chord is placed at an angle of 45 degrees. The rod is perpendicular (or parallel) to the boundary. It can also be understood as the diagonally placed quadrangular pyramid net frame rotated 45 degrees around the vertical axis. This kind of space frame also has the advantages of short upper chord and lower chord length, and there are few intersecting rods on the nodes, and the roof panel has a single specification, which is suitable for peripheral support.
